For heavy voice and music I get 12-14 hours before they die. Not sure why but it works fine in Neutron Player as well as streaming apps - with those the vol can still be controlled on the BTR5 directly as well as native phone control. Be advised that these are hard to get in. Well-made, exactly as described. But in reality, all the hardware is cheap and poorly designed. I took one star off because theyre definitely not a true black (I ordered the mixed tone brown leather with black straps), and pull a little navy, which isnt helped by the fact that theyre top-stitched with navy thread. The headphones looked brand new. It is absolutely amazing! Overpriced for sound 3. Gotta give it to Razer with this one, rarely do you hear budget and Razer in the same sentence.